The US Census July 2013 Computer and Internet Use Supplement surveys US households and asks "How much does your Internet service provider charge you per month?" From this, I can get an empirical distribution of US households' monthly Internet service costs.
This data is mainly about fixed broadband (i.e. home Internet access), however. I am looking for a data set that will allow me to compute this same distribution for cellular data plans.
There are various reports that compile the cost of selected mobile broadband plans (e.g. the FCC International Broadband Data Report appendix), but not the number of subscribers for each plan. So these don't really help me.
Is there a data set that allows me to compute the distribution of monthly cost of cellular data subscription in a population? I prefer US, but would also be happy with data for another population.